Alcohol meter must be cleaned and dry before use , (cleaned with soap or alcohol).after clean the alcohol meter, hand can not take in engraved line portion, you should gently with your index finger and thumb hold the dry tube top.Must be cleaned graduated cylinder to avoid affecting the readings.If you find indexing position paper, glass cracks, surface grime attached and can not be removed, the alcohol count must immediately stop using .

Measuring method :

The alcohol was poured into a graduated cylinder 250ML, be careful not to pour too full, then put a thermometer and alcohol meter (upside down) vertically into the cylinder and don't stick the cylinder wall, wait a moment. Eyes flat as the temperature and alcohol, by "alcohol meter temperature concentration conversion table", then find the standard (alcohol content of 20 °).

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